<template>
  <!-- Parent.vue -->
  <!-- <Child
    :modelValue="countModel"
    @update:modelValue="($event) => (countModel = $event)"
  /> -->
  <Child v-model:kkx="countModel1" />
  <button @click="update">vlaue自增</button>
</template>
<script setup>
import { ref } from "vue";
import Child from "./childcopy.vue";
const countModel1 = ref(0);
function update() {
  countModel1.value++
}
</script>
